12 42 500 Replacing battery positive lead (between starter, alternator and battery positive terminal)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Read out fault memory of DME control unit
Switch off ignition
Disconnect BATTERY NEGATIVE LEAD
Remove INTAKE AIR MANIFOLD

Remove protective cap (not shown).

Release screw, remove battery positive lead (1) from battery positive terminal.

Tightening torque 12 42 3AZ .

Fig 1: Identifying Battery Positive Lead With Screw

G05501935

Courtesy of BMW OF NORTH AMERICA, INC.

Remove protective cap and release nut underneath.

Tightening torque 12 42 1AZ .

Disconnect battery positive lead (1) from alternator.

Fig 2: Identifying Battery Positive Lead From Alternator

G05501936

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Unfasten nut.

Tightening torque 12 42 2AZ .

Disconnect battery positive lead (2) from starter motor.

Fig 3: Identifying Battery Positive Lead And Plug

G05501937

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip battery positive lead (1) from holder (2) and remove.

Fig 4: Identifying Battery Positive Lead And Holder

G05501938

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault messages.
Now clear the fault memory.